FRIESEN, Victor C. Crows and Their (C)awing. Blue Jay, [S. l.], v. 49, n. 3, 1991. DOI: 10.29173/bluejay5394. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5394. Acesso em: 4 apr. 2025.